Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754940AbbHNDRy (ORCPT ); Thu, 13 Aug 2015 23:17:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41919 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753079AbbHNDMn (ORCPT ); Thu, 13 Aug 2015 23:12:43 -0400 From: Josh Poimboeuf To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Cc: linux-kernel@vger.kernel.org, Michal Marek , Peter Zijlstra , Andy Lutomirski , Borislav Petkov , Linus Torvalds , Andi Kleen , Pedro Alves , Namhyung Kim , Bernd Petrovitsch , "Chris J Arges" , live-patching@vger.kernel.org Subject: [PATCH v10 02/20] x86/asm: Add C versions of frame pointer macros Date: Thu, 13 Aug 2015 22:10:23 -0500 Message-Id: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1412 Lines: 55 Add C versions of the frame pointer macros which can be used to create a stack frame in inline assembly. Signed-off-by: Josh Poimboeuf --- arch/x86/include/asm/frame.h | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/frame.h b/arch/x86/include/asm/frame.h index 8a6cd26..9a30ec7 100644 --- a/arch/x86/include/asm/frame.h +++ b/arch/x86/include/asm/frame.h @@ -1,10 +1,10 @@ #ifndef _ASM_X86_FRAME_H #define _ASM_X86_FRAME_H -#ifdef __ASSEMBLY__ - #include +#ifdef __ASSEMBLY__ + /* * These are stack frame creation macros. They should be used by every * callable non-leaf asm function to make kernel stack traces more reliable. @@ -22,5 +22,21 @@ #endif .endm +#else /* !__ASSEMBLY__ */ + +#ifdef CONFIG_FRAME_POINTER + +#define FRAME_BEGIN \ + "push %" _ASM_BP "\n" \ + _ASM_MOV "%" _ASM_SP ", %" _ASM_BP "\n" + +#define FRAME_END "pop %" _ASM_BP "\n" + +#else /* !CONFIG_FRAME_POINTER */ + +#define FRAME_BEGIN "" +#define FRAME_END "" + +#endif /* CONFIG_FRAME_POINTER */ #endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_FRAME_H */ -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/